[interpreter] VisitForTest for bytecode generator

src/interpreter/bytecode-generator.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_INTERPRETER_BYTECODE_GENERATOR_H_
 #define V8_INTERPRETER_BYTECODE_GENERATOR_H_
 
 #include "src/ast/ast.h"
 #include "src/interpreter/bytecode-array-builder.h"
 #include "src/interpreter/bytecode-label.h"
@@ skipping 30 matching lines @@
   class ControlScopeForBreakable;
   class ControlScopeForIteration;
   class ControlScopeForTopLevel;
   class ControlScopeForTryCatch;
   class ControlScopeForTryFinally;
   class ExpressionResultScope;
   class EffectResultScope;
   class GlobalDeclarationsBuilder;
   class RegisterResultScope;
   class RegisterAllocationScope;
+  class TestResultScope;
+
+  enum class TestFallthrough { kThen, kElse, kNone };
 
   void GenerateBytecode();
   void GenerateBytecodeBody();
   void FinalizeBytecode();
 
   DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
 
   // Dispatched from VisitBinaryOperation.
   void VisitArithmeticExpression(BinaryOperation* binop);
   void VisitCommaExpression(BinaryOperation* binop);
@@ skipping 94 matching lines @@
   // Visit a statement and switch scopes, the context is in the accumulator.
   void VisitInScope(Statement* stmt, Scope* scope);
 
   // Visitors for obtaining expression result in the accumulator, in a
   // register, or just getting the effect.
   void VisitForAccumulatorValue(Expression* expr);
   void VisitForAccumulatorValueOrTheHole(Expression* expr);
   MUST_USE_RESULT Register VisitForRegisterValue(Expression* expr);
   void VisitForRegisterValue(Expression* expr, Register destination);
   void VisitForEffect(Expression* expr);
+  void VisitForTest(Expression* expr, BytecodeLabels* then_labels,
+                    BytecodeLabels* else_labels, TestFallthrough fallthrough);
 
   // Methods for tracking and remapping register.
   void RecordStoreToRegister(Register reg);
   Register LoadFromAliasedRegister(Register reg);
 
   // Initialize an array of temporary registers with consecutive registers.
   template <size_t N>
   void InitializeWithConsecutiveRegisters(Register (&registers)[N]);
 
   inline BytecodeArrayBuilder* builder() const { return builder_; }
@@ skipping 43 matching lines @@
   ZoneVector<BytecodeLabel> generator_resume_points_;
   Register generator_state_;
   int loop_depth_;
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODE_GENERATOR_H_